US Bridges

Burr Oaks RD over Big Creek

Good

Linn County, Iowa · 084053005 · Structure no. 000000000221271

Built
2004
21 years old
Condition
Good
inspected September 2024
Type
Slab
Wood or Timber
Length
71 ft
3 main spans
Daily traffic
98
2022 count
Owner
County
County Highway Agency

About this bridge

Burr Oaks RD over Big Creek is a wood or timber slab carrying Burr Oaks RD over Big Creek in Linn County, Iowa. It was built in 2004, so it is 21 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 98 vehicles a day, roughly 24% of them trucks, projected to reach 98 by 2044. The structure is 71 ft (21.6 m) long and 25 ft wide.

CarriesBurr Oaks RD
CrossesBig Creek
Location084053005
RouteCounty Highway 0
StateIowa
Coordinates42.05656, -91.47022
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating63.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2022)
Projected traffic98 by 2044
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Burr Oaks RD over Big Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Burr Oaks RD over Big Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Burr Oaks RD over Big Creek carry?

About 98 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is Burr Oaks RD over Big Creek?

The structure is 71 ft (21.6 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns Burr Oaks RD over Big Creek?

It is owned by the County Highway Agency.